William h



W. H. PAYNE.

GHIMNEY GAP.

Patented May 23, 1882.

IINTTTD STATES PATTLNT @Trice WILLIAM H. PAYNE, OF GAMDEN, NEW JERSEY, ASSIGNOR OF ONE-HALF TO ALVIN WILKE,

CHIMNEY-CAP.

SPECIFICATION forming part of Letters Patent No. 258,468, dated May 23, 1882.

Application tiled February 28, 1882.

To all whom it may concern Be it known that I, WILLIAM H. PAYNE, a citizen ofthe United States, and a resident of Camden, New Jersey, have invented certain Improvements in Chimney-Caps, of which the following is a specification.

The object of my invention is to so construct a chimney-cap as to increase the draft ot the chimney and counteract the iniiuenee of currents ofair, which would otherwise cause downdraits. This object I attain in the manner which I will now proceed to describe, reference being had to the accompanyingdrawings, in which- Figure l is a perspective view of my iniproved chimney-eap, showing the parts detached from each other; Fig. 2, a vertical section of the same, and Fig. 3 a sectional plan on the linel 2, Fig. 2.

A is a. tubular easing of sheet or .cast iron, which is intended to be secured in any convenient manner to the upper end of a chimney or stack. In this easing, near the upper end ofthe same, are formed a series ot' inclined openings, a., from the front edges ot' which vanes b project into the casing, these vanes following theinelination ofthe openings, and being also inclined in respect tothe radial line ot' the casing, as shown in Fig. 3. The easing A has internal bearings, d, fora shaft, j', the upper end ot' which carries a cap, B, from which is suspended by rods g a drum, D, the latter inclosing the upper portion ot'the easing A, but being free to turn with the cap B and shat'tf. In the drum D are formed a series ot'openings, c', inclined in a direction the reverse ot' the openings a, inthe casing A. To the outside of the drum D, in advance of each opening t', is secured a bent vane, m, and on the inside'ot' the drum, adjacent to the rear edge of each opening t', is a radial vane, u, both sets of vanes m and a following the inclination ofthe openings t". The easing A and drum D are open at the top, and the drum is caused to revolve by the action of the wind upon the exterior vanes, m, and upon vanes w on the cap B.

The smoke and products of combustion rising through the easing A strike the vanes b, and are caused to take a spiral course thereby, before escaping from the top of the easing,

(No model.)

any smoke which escapes through the openings being brought under the iniiuenee of the revolving vanes a, and being thereby thrown upward and discharged through the openings a, or through the opening at the top of the drum; or, it' upon the lee side ot' the chimney, the smoke is free -to escape from the openings runder theiniiuence ofthe vanes a. The vanes b on the inside of the casingA effectually prevent what is commonly termed downdraft, as currents ot` air entering the openings a are prevented by the vanes b from striking downward into the casing, and are thrown upward, so as to escape from the open top or mouth ot the said casing, thereby forming jets, which induce draft. Currents caused by the vanes a ofthe revolving drum also strike the vanes b, and are deflected upward inside the casing A, so as to induce draft. A detiector, or, is preferably arranged on the under side of the cap B, immediately above the mouths otl the casing A and drum D, so as to facilitate the discharge of the smoke from the space between the drum and cap.

I claim as my invention- 1. The combination, in a chimney-cap, ofthe central fixed casing, A, having inclined open ings a and internal vanes, b, with the rotating drum D, inclosing said casing, and having inclined internal vanes, a, all substantially as set forth.

2. The combination, in a chimney-cap, of the lined central casing, A, having inclined openings a and internal vanes, 1),-with the rotating drum D, inclosing said casing, and having inclined openings i and inclined internal vanes, a, as set forth.

l3. The combination, in a chimney-cap, of the fixed central casing, A, having inclined openings a and internal vanes, b, with the rotating drum D, inclosing said casing, and having inclined openings t', inclined internal vanes, a, and exterior vanes, m, as specified.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

WM. H. PAYNE.

Witnesses:

HARRY DRURY, HARRY SMITH. 

